The boarder's a no man's land patrolled by border guards. But on weekends, it becomes a place where families separated by immigration status can come to spend time together, albeit on opposite sides of a fence.

For families separated between Mexico and the United States, the border fence can seem insurmountable. And it often is. But in a park near San Diego, the fence has become a place where those divided families meet and catch glimpses of one another -- through the fence.